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Benefits   Product Details   Boilers & Controls   Comparison   Hydronics vs. Electric


Hydronic Radiant Floor Heating Systems

Hydronic under floor heating is the most popular form of radiant heat, mainly because it has been around the longest. Hydronic heating was first used by the Romans, but there have been significant developments since. In the most recent hydronic floor heating systems, PEX radiant tubing is installed in a concrete mass called Gypsum Concrete or "Gypcrete." This method works very well in most applications, but there have been developments in the installation process of hydronic under floor heating that make it easier to install for certain situations. This new development is known as a low-mass or modular board underlayment system. Rather than embedding the hot water tubing in concrete, the PEX tubing is laid in the grooves of pre-cut wood panels. This new method of hydronic floor heating is ideal for remodeling as well as most new construction projects.

Warmzone represents both types of hydronic radiant heating systems. Our goal is to match your individual needs with the best system at the best price. There isn't a universal radiant heating system out there that is an ideal fit for every project, but there is an ideal system for every project. Also, because of our relationship with the top radiant heat manufacturers, we can guarantee the lowest price on the highest quality systems available.


Hydronic Radiant Heated Tile Floor



Installing heating cable for a radiant floor heating system
The InfloorBoard hydronic heating systems use this latest low-mass, radiant heating technology. The InfloorBoard system is comprised of three grooved, 5/8-inch thick, aluminum-clad wood composite panels that accommodate 3/8-inch PEX tubing. Immediately before application of finished flooring goods, InfloorBoard is glued, then screwed (or stapled) to a standard subfloor in a pattern to best accommodate a hydronic tubing layout for a particular space. Finished flooring goods may then be applied over the InfloorBoard as required.



Advantages of InfloorBoard Hydronic Heating Systems

Cost Friendly - InfloorBoard avoids joist upsizing, double plating and hardwood nailing strips associated with gypsum-based concrete radiant floor heating systems. It also eliminates substantial drying costs required by moisture-laden concrete and gypcrete.

Flooring Friendly - The modular board provides a quality flat surface for all types of flooring including hardwood, laminate and engineered wood, tile, stone, carpet, and vinyl. Also, your flooring won't be exposed to moisture that is found in gypcrete, which can affect some types of materials.

Low Profile - InfloorBoard has a very small profile making it ideal for retrofit or remodeling floor applications.

Superior Responsiveness - With its aluminum top layer, InfloorBoard is an ideal radiant heat system because it is many times more responsive than a cementatious thermal mass. This results in quick heat-up, no overheating, and greater zone control.

Efficiency - With low mass and a super conductive aluminum surface, InfloorBoard can operate at lower temperatures than conventional cementatious, thermal mass assemblies, thus providing greater system efficiency.

Lightweight - InfloorBoard is very lightweight (5 times lighter than concrete), which can be a significant factor in raised floor spanning calculations.

Conventional Construction - InfloorBoard is installed within the natural flow of a construction project, using conventional practices and conventional tools.

Scheduling - InfloorBoard can be stored onsite in a dry place so it's ready for immediate installation, rather than having to schedule a subcontractor for gypsum/concrete work.

Green Product - InfloorBoard is constructed of non-virgin wood and is fully recyclable.

Hydronic floor heat with InfloorBoard


Hydronic radiant floor heating is the most comfortable and efficient way to heat your home or building, with numerous construction benefits and unsurpassed flexibility in zoning. For many years typical applications for radiant systems involved embedding tubing in concrete slabs or pouring “lightweight concrete” over tubing stapled to subfloors. The lack of quality alternatives to these types of systems permitted designers to overlook the limitations and disadvantages of concrete systems.


InfloorBoard is designed for the application of hydronic radiant tubing over a variety of construction types. ThermalBoard may be used in new construction and is advantageous in the growing retrofit market. While only adding 5/8-inch to the existing floor height, InfloorBoard provides a superior performing radiant heating system. Application of the system is made easy because only three types of pieces are required for installation. Radiant floor heating system


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